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Unformatted text preview: the z-axis. It is used to store the distance between the upper surface and the x/y plane along the z-axis. So, this representation is very useful to predict the geometry of the machined surface and more particularly the cut height for some selected xi and yi coordinates. Surface Best Fit 195 However, it must be underlined that this representation is restricted to cases where the orientation of the normal to the surface is ranged. Nevertheless, most common milling operations satisfy this condition and lot of the recent machining simulation models are based on this method or its derivates (extended Z-map, moving node extended Z-Map). The kinematic and dynamic approaches can be distributed in three sub groups: geometrical oriented approaches, cutting forces oriented approaches and vibration oriented approaches. Maeng [Maeng et al., 2003] proposes a geometrical oriented model, based on the zmap method. The first step consists in computing the trace left by the extreme point of the milling tool during its displacement. This trace is expressed as a system of equations representing the geometrical surface envelope generated by the movement of the cu...
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- Spring '10
- The Land